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Three digit even numbers from the digits 1 to 6, with repetition allowed, number:
A144
B108
C96
D120
Answer & Solution
Correct answer: B. 108
1. The units place must be 2, 4 or 6, so 3 ways.
2. The other two places have 6 choices each.
3. That gives 3 times 36, or 108.
_Source: NCERT Class 11 Mathematics, Chapter 7, Permutations and Combinations._
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